1 files changed, 20 insertions, 0 deletions
diff --git a/lib/gitlab/background_migration/user_mentions/models/concerns/isolated_feature_gate.rb b/lib/gitlab/background_migration/user_mentions/models/concerns/isolated_feature_gate.rb
new file mode 100644
index 00000000000..ba6b783f9f1
--- /dev/null
+++ b/lib/gitlab/background_migration/user_mentions/models/concerns/isolated_feature_gate.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module BackgroundMigration
+    module UserMentions
+      module Models
+        module Concerns
+          # isolated FeatureGate module
+          module IsolatedFeatureGate
+            def flipper_id
+              return if new_record?
+
+              "#{self.class.name}:#{id}"
+            end
+          end
+        end
+      end
+    end
+  end
+end